Sorry, forgot about the original post.
It is an airmail label from Kenya. Below is another. It seems (perhaps someone can confirm?) that airmail labels from Kenya, after independence, carry the "Kenya Airways" name. Kenya Airways is the national airline of Kenya. My wife flew on Kenya Air once, and lived to tell the tale.

I did a search on this site for the word "airmail" in order to find the thread mentioned but gave up when it returned 35 pages of threads.